Zoological reserve of local significance, located southeast of the village Berestyane.
Area – 35.6 hectares.
The status was granted to preserve a part of the swampy black alder forest of Tsumanska Pushcha with valuable natural complexes situated on the left bank of the river Kormyn.
It is a breeding ground for river beavers, and river otters that also occur here.
Berestyansky Reserve is a part of the “Tsumanska Pushcha” National Nature Park.